Supplementary Material for: Disseminated Mycosis by <b><i>Arthrocladium</i></b> <b><i>fulminans</i></b> Jeopardizing a Patient with GATA2 Deficiency B.Egenlauf M.Schuhmann T.Giese T.Junghanss M.Stojkovic K.Tintelnot S.deHoog J.Greil E.Richter M.Vehresschild C.P.Heussel F.J.F.Herth M.Kreuter 2019 GATA2 deficiency is characterized by monocytopenia, deficiency of dendritic cells, and a variable degree of lymphocytopenia affecting B cells and NK cells, leading to an enhanced risk of mycobacterial, viral, and fungal infections. Here we present a patient with a heterozygous intronic GATA2 mutation who acquired a fatal disseminated mycosis due to the black yeast-like fungus <i>Arthrocladium fulminans</i> following an infection with <i>Mycobacterium sherrisii</i>. This case illustrates that in patients with severe uncommon infections, immunodeficiency syndromes must be ruled out.